Home / 19,290.48-28,951.11-7,611.90

Finding the Fourth Proportional to 19,290.48, 28,951.11 and 7,611.90

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Solution

The fourth proportional to 19,290.48, 28,951.11 and 7,611.90 is: 11,423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.48 : 28,951.11 = 7,611.90 : x
  2. Step 2: Convert to fraction form
    19,290.48/28,951.11 = 7,611.90/x
  3. Step 3: Cross multiply
    19,290.48x = 28,951.11 × 7,611.90
  4. Step 4: Simplify right side
    19,290.48x = 220,372,954.21
  5. Step 5: Solve for x
    x = 220,372,954.21/19,290.48
  6. Step 6: Final answer
    x = 11,423.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.